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This paper presents performance analysis of beamforming algorithm for canceling multiple channel noise depending on variation of hidden layer of the multilayer feedforward network and the number of epoch (also known as number of iteration). We consider the learning rate variation of the multi layer perception (MLP) to determine the adaptive learning rate of the network. An MLP has been considered...
The bit error rate (BER) performance for quadrature amplitude modulation (QAM) with different diversity combining scheme is derived for Rayleigh fading channel using Log-likelihood ratio (LLR). Three combining techniques, maximal ratio combiner (MMC), selection combining (SC), and Equal Gain Combiner (EGC) are considered for the BER analysis in this paper. The average BER performance of QAM symbol...
Single carrier communication (SCC) uses equalizer to minimize signal distortion. Design complexity increases with data rate in SCC. Multi-carrier based wireless communication reduces channel fading by sub-dividing the channel into a number of equal narrow bands, in which inter symbol interference (ISI) and inter carrier interference (ICI) effects cause bit error. Recently, a mechanism has been proposed...
The ISI (inter symbol interference) and ICI (inter carrier interference) effects can be reduced using cyclically prefixing guard bands with the orthogonal frequency division multiplexing (OFDM) symbols. Recently, the authors reduced them by cyclically shuffling the sub-carrier frequency and using CI (carrier interferometry) code to each sub-carrier. In this paper, the authors attempt to analyze the...
The bit error probability for quadrature amplitude modulation (QAM) with L -fold space diversity in Rayleigh fading channels using earlier Log-likelihood ratio (LLR) approach is presented in this article. Two combining techniques, Maximal Ratio Combiner (MRC) and Selection Combining (SC) are considered for the analysis. LLR is used for the individual bits forming a QAM symbol to derive expression...
This paper presents performance analysis of beamforming algorithm for canceling multiple channel noise depending on variation of hidden layer of the multilayer feedforward network and the number of epoch (also known as number of iteration)[1]. A multi-layer perception (MLP) has been considered to perform beamforming. A beamforming is an array of sensors connected to the MLP inputs. We have also used...
In orthogonal frequency division multiplexing (OFDM) based wireless communication systems; extra guard period is inserted to eliminate ISI (inter symbol interference) and ICI (inter carrier interference) effect. The guard period decreases the symbol rate. The authors describe here a model that eliminates the effects of ICI and ISI without inserting extra guard period. The sub-carrier frequencies and...
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